PDF malware analysis — malicious · bb68982064d2474a

MALICIOUS

PDF

85.0 KB Created: 2021-06-28 02:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25

MD5: c695ff3f08042063a1b513a76a61c525 SHA-1: 1fe17391c3faf579cf8641f72a8670d61a3b69b9 SHA-256: bb68982064d2474a8b7036c0617a999969c013bce8a07537b957f48ca8ae69e6

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs, many of which point to compromised WordPress sites, suggesting a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly indicate malicious intent. The document's structure as a link farm on disposable or compromised hosting further supports this, likely serving as a lure to external malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9846

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://allytemp.ru/uplcv?utm_term=361+chief+justice+cushing+highway+scituate+ma PDF link annotation
- http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdbedad3bcf---47222190584.pdfIn PDF document text
- http://smepil.com/ckeditor/userfiles/files/xatuded.pdfIn PDF document text
- http://marta-galan.com/files/varios/file/zuxuxavopexapede.pdfIn PDF document text
- http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d788928c2f4---jegamevu.pdfIn PDF document text
- http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bc186c9d117---86689054843.pdfIn PDF document text
- https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/e96355222f9ca40c325ae6f518295286/25108489288.pdfIn PDF document text
- https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607472915d1a6---47570308681.pdfIn PDF document text
- https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160985b4aa2143---bomamefivebusowopi.pdfIn PDF document text
- http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607d18e179091---40056893018.pdfIn PDF document text
- https://fibaquitaine.fr/cebatrama/userfiles/files/jesiwisebakesosuf.pdfIn PDF document text
- http://nfrostov.ru/upload/files/sefekijatawigoluturadif.pdfIn PDF document text
- http://www.pzkexie.com/up_files/file/rilujubeboxixiwilolawanu.pdfIn PDF document text
- https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/e4dff4db1f43e1efb37ae377d6e62de6/4815768774.pdfIn PDF document text
- http://ofipapel.org//ckfinder/userfiles/files/67067730162.pdfIn PDF document text
- https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/65db7f14738416d45f20d5269f9c72da/15812898205.pdfIn PDF document text
- http://amandatravel.com/userfiles/file/tupogerixifijabanak.pdfIn PDF document text
- http://daiichibus.vn/uploads/news_file/19261462599.pdfIn PDF document text
- https://senhewood.com/d/files/36567750160.pdfIn PDF document text
- http://thedewakohchang.com/image/upload/File/4399108004.pdfIn PDF document text
- https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/llme3spjsqv8vhfjdk30mdqr90/86595714679.pdfIn PDF document text
- http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160ab848d4bd00---55265093254.pdfIn PDF document text
- https://aduanaldelvalle.com/userfiles/file/91051008456.pdfIn PDF document text
- http://apluskleaning.com/admin/images/file/nakog.pdfIn PDF document text
- https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/07kihcgd50otqb20oianir9rtt/17986243319.pdfIn PDF document text
- http://hitecds.com/userfiles/file/fokagiwiguwodiragasole.pdfIn PDF document text
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/7bada9b105c72ab2855f0342bfd7c2bf/jikoxagamamodorubaduwozon.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e456.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE456	17412 bytes
SHA-256: `843afa70d783b97f5f2f356ab742fb7b052588bd0ba5a86b0023fa473ef04838`
`font_01_sfnt_off0001124f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1124F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00012a66.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12A66	11244 bytes
SHA-256: `7327fc310d18d450c50a17d1d8fc8803a9143d469bdf23a64a83c30402e830a4`

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